ASTROSAT CZTI

Data Quality Report

Orbit 54904

Creation date: 2025-11-21T11:55:53.983387
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A14_039T06_9000006526_54904cztM0_level2.fits modeM0/AS1A14_039T06_9000006526_54904cztM0_level2_quad_clean.evt
Size (bytes)1,030,098,240179,660,160
Size982.4 MB 171.3 MB
Events in quadrant A9,497,4121,191,982
Events in quadrant B5,934,3151,288,843
Events in quadrant C12,666,2751,019,823
Events in quadrant D9,027,0061,040,490

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03749210
B0277129
C0465837
D03648426

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02640
B02640
C02640
D02640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A130092902.229226%
B130071971.514569%
C13009179613.805827%
D130026715.160745%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 15202 13015 117 117 0.77% 0.90%
B 15201 13012 28 28 0.18% 0.22%
C 15201 13013 1328 1328 8.74% 10.21%
D 15202 13012 503 503 3.31% 3.87%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 3 14 3666033 10876.75 1366 1333 336.9
A 12 115 168117 495.01 1366 1333 336.9
A 0 8 146959 432.21 1366 1333 336.9
B 10 247 240842 821.37 1359 1308 291.6
B 5 185 161780 550.27 1359 1308 291.6
B 5 236 81562 275.19 1359 1308 291.6
C 4 5 4529360 13187.15 1262 1254 343.4
C 9 38 1782671 5188.0 1262 1254 343.4
C 6 223 626095 1819.72 1262 1254 343.4
D 11 129 1956716 5314.7 1303 1247 367.9
D 10 181 497327 1348.28 1303 1247 367.9
D 6 239 470376 1275.03 1303 1247 367.9

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter